gifford. then it begins with the tips lock the doors take cover use heavy furniture to block doors and then there's this. >> if you are caught out in the open and cannot conceal yourself or take cover you might consider trying to over power the shooter with whatever means are available. >> cement experts say you grab scissors common stuff. they don't tell people stuff they don't know. the president of the independent firearm's association says better option during active shooter situations is to have a legal firearm. remember the last time they came out with an active shooter guidelines it was for dhs employees all of them including armed agents they told them all to run and hide. the agents responded by saying i think it's a better idea if we come in contact with an active shooter we pull out our guns and engage that shooter. this is the second time dhs has tried to do this. it's heapart of president obama gun safety issue. >> the experts of the navy seal said one tool you could use if you di